Which of the following statements is true of reptiles?
A. Sperm are released in the vicinity of the female.
B. Eggs have an amnion and a chorion.
C. Eggs undergo external fertilization.
D. Larvae become adults by metamorphosis.
E. Embryonic and fetal development in all species is only by oviparity.
Answer: B
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Which of the following is an example of bulk flow during gas exchange in vertebrates?
A. movement of water past a respiratory surface B. movement of hemolymph throughout the body C. movement of oxygen from the lung into the bloodstream D. movement of carbon dioxide from body cells into the bloodstream E. All of the answer options are correct.
The correlation coefficient for unrelated people is ____________________
Fill in the blank(s) with correct word
Which statement is true?
a. Phyla names based on morphology have been retired. b. All Ecdysozoa have been reclassified as Lophotrochozoa. c. Eumetazoa contains the clades Bilateria and Radiata. d. Molecular data indicate sponges are unrelated to metazoa.
In people who do not have Tay—Sachs disease, the hexA gene encodes an enzyme that
A) converts purines to uric acid in the kidneys. B) removes a sugar group from phenylalanine. C) converts tyrosine to melanin in skin. D) cleaves acetylgalactosamine from gangliosides. E) synthesizes glycogen from glucose monomers.